System Pulse Leds - Lenovo HX1310 Installation And Service Manual

LED
Off Off
Off On /
Blinking
Off On /
Blinking
On Off
On Off
On On /
Blinking
Note: When the dc LED is blinking at a 1 Hz rate, the PSU is at STANDBY mode. That is, no dc power
output is from this PSU.

System pulse LEDs

Use this information to diagnose possible errors that are indicated by the system pulse LEDs.
The following LEDs are on the system board and help you to monitor the system power-on and power-off
sequencing and boot progress (see "System-board LEDs" on page 25 for the location of these LEDs).
Table 6. System pulse LEDs
LED
FPGA heartbeat
IMM heartbeat
56
HX1310, HX2310-E, HX3310, HX3310-F Installation and Service Guide
Description
On The power supply
has failed.
Off The power supply
has failed.
On The power supply
has failed.
Off Power supply not
fully seated, faulty
system board, or
the power supply
has failed.
The power supply
On
has failed.
On The power supply
has failed.
Description
Power-on and power-off
sequencing
IMM2.1 heartbeat boot process
Action
4. If the problem remains,
replace the power supply.
Replace the power supply.
Replace the power supply.
Replace the power supply.
1. Reseat the power supply.
2. Use the Power Configurator
utility to ensure that current
system power consumption
is under limitation. For
more information and to
download the utility, go to
http://www-03.ibm.com/
systems/bladecenter/
resources/powerconfig.html.
Replace the power supply.
Replace the power supply.
Action
1. If the LED blinks at 1 Hz, it is functioning
properly and no action is necessary.
2. If the LED is not blinking, (trained technician
only) replace the system board.
The following steps describe the different stages
of the IMM2.1 heartbeat sequencing process.
1. When this LED is blinking fast
(approximately 4 Hz), this indicates
that the IMM2.1 code is in the loading
process.
2. When this LED goes off momentarily, this
indicates that the IMM2.1 code has loaded
completely.
3. When this LED goes off momentarily and
then starts blinking slowing (approximately
Typically indicates a
power-supply is not
fully seated.